[New Product] Open AI ChatGPT

[paulmilbank]

As part of #9544, I am submitting this PR to add an initial EOL page for OpenAI ChatGPT through their API.

One thing I noticed that I am unsure about is when EOL is marked as false, the column gets colored green and marked with a yes which I'm not sure make sense grammatically. It's correct in the API, with {"eol": false}. I have kept it consistent with the other pages for now with the column Deprecated, colored green with a yes.

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[usta]

As like i mention in related issue report :
my 2 cents for adding llms to endoflife.date project is 👎
Having projects which eoas: false eol: false shouldnt be our goal

[captn3m0]

We should flip the labels. We use discontinued as a flipped field in some device pages but here we should change the label so it reflects Yes=Good.

[paulmilbank]

We should flip the labels. We use discontinued as a flipped field in some device pages but here we should change the label so it reflects Yes=Good.

I will see if I can find examples where the labels are reversed to try and keep it consistent. Would you prefer I do the same for the Claude page in this PR? Or should I raise a new PR for that?